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Author

Zixiao Zhao

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2026

Seismic Impedance Inversion With AT0V Sparse Constraint

Seismic impedance inversion plays a crucial role in reservoir characterization, and its resolution directly affects the reliability of hydrocarbon prediction. Although L0-norm-based sparse inversion can enhance resolution, it primarily exploits stratigraphic boundary information while neglecting intertrace similarity,...

Hao Wu, Yu-Yao Li, Jian He et al. · 0 citations
Preprint Aug 2026

A Massively Parallel Three-Grid Preconditioner for the High-Frequency Helmholtz Equation

Accurate simulation of three-dimensional time-harmonic wave propagation over many wavelengths requires control of phase error and efficient solution of large indefinite systems. We develop a three-grid solver based on the compact 27-point interpolated optimized finite-difference (IOFD) discretization. Its wavenumber-de...

Shu-Bin Fu, Yi-Tong Wang, Zi-Xiao Zhao · 0 citations

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